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All Journal AGRITROPICA : Journal of Agricultural Sciences Jurnal Guru Peneliti Profesional
Gustian, Deri
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Agriculture, Biological Sciences & Forestry Education Other

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Limb Muscle Explosiveness and Arm Muscle Explosive Power to The Precision of The Lantern Ball Player Smash Chan, April; Gustian, Deri; Nevilta, Ariotia
Jurnal Guru Peneliti Professional Vol. 1 No. 2 (2017): Jurnal Guru Peneliti Profesional
Publisher : Yayasan Sekora

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.34004/jurgupenprof.122017.09

Abstract

The problem in this research stems from the writer's observations in the field, it turns out that the LENTERA Padang volleyball player's smash accuracy is still low. The purpose of this study was to determine the relationship between the explosive power of the leg muscles and the explosive power of the arm muscles on the accuracy of the Smash. This type of research is correlational. The population in this study were 20 male volleyball players LENTERA Padang, using a total sampling technique in which all populations were sampled. To obtain the research data, the vertical jump test, two hand medicine ball put test and accuracy of Smash were used. The data obtained were analyzed by using product moment correlation. Based on the data analysis, it was found that the results obtained by the explosive power of the leg muscles had a significant relationship with the accuracy of the smash of the LENTERA Padang volleyball player, indicated by the results obtained, namely rcount 0.72> r table 0.444, from the results obtained that the explosive power of the arm muscles had a significant relationship. with the accuracy of the LENTERA Padang volleyball player Smash accuracy, indicated by the results obtained, namely rcount 0.51> r table 0.444, there is a significant relationship jointly between the explosive power of the leg muscles and the explosive power of the arm muscles with the accuracy ability of the LENTERA Padang volleyball player Smash, This is indicated by the results obtained by Rhitung 0.73> Rtabel 0.444
Diversity of Land Arthropods in Community Oil Palm Plantations in the Coastal Area of Bengkulu Fauzi, Ariffatchur; Zarkani, Agustin; Djamilah, Djamilah; Gustian, Deri; Hamidi, Ilmi; Ifebri, Rihan; Prastio, Turko
AGRITROPICA : Journal of Agricultural Sciences Vol. 8 No. 1 (2025)
Publisher : Badan Penerbitan Fakultas Pertanian (BPFP)

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31186/j.agritropica.8.1.33-42

Abstract

Bengkulu is one of the provinces located on the island of Sumatra, boasting a significant agricultural sector. One of the leading agrarian commodities in Bengkulu Province is oil palm. Oil palm in Bengkulu is planted in coastal areas. One of the key factors supporting oil palm fruit production is a healthy soil arthropod ecosystem. Soil arthropods play an essential role in the oil palm plantation ecosystem. As organisms that live in the soil, these animals help maintain soil and plant health, improving soil structure and nutrient availability for oil palm plants. This study aims to obtain initial data on the diversity of soil arthropods and their roles in smallholder oil palm plantations on the coast of Bengkulu. This study began with sampling oil palm plantations around the coast of Bengkulu. The areas that will be used as study locations include Sungai Suci, Danau Gedang, and Pekik Nyaring. Arthropod sampling was carried out by installing pitfall traps in both areas, which were determined diagonally in a ​​200 m² area, with 20 pitfall trap units per location. Arthropod species were identified based on morphology, and the type and number of populations were recorded. The Shannon-Wiener diversity index, dominance index, and evenness index measure analysis of biodiversity data. The results of the study showed that in the majority, the diversity of soil arthropods in the three sampling areas was moderate, the dominance of arthropod types was low to moderate, and evenness was moderate to high.
Detection and Sequence Analysis of Pepper Yellow Leaf Curl Virus Isolates That Infected Chili (Capsicum annuum L.) in Bengkulu, Indonesia Gustian, Deri; Sutrawati, Mimi; Fauzi, Ariffatchur; Hamidi, Ilmi; Mengesha, Nakachew Minuye; Do, Duy-Hung; RATTANA, Nitchayamon
AGRITROPICA : Journal of Agricultural Sciences Vol. 8 No. 2 (2025)
Publisher : Badan Penerbitan Fakultas Pertanian (BPFP)

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31186/j.agritropica.8.2.74-80

Abstract

Pepper yellow leaf curl Aceh virus (PepYLCAV) and pepper yellow leaf curl Indonesia virus (PepYLCIV) are begomoviruses that dominate chili cultivation in Indonesia. Characterization of these two begomoviruses is essential as basic information for the development of virus control technologies. The symptoms on chili plants indicate that PepYLCIV is more severe than PepYLCAV, with severe mosaic, curling, and yellowing, whereas PepYLCAV causes only mild mosaic and yellowing. Sequencing results also show that the nucleotides and amino acids between PepYLCAV and PepYLCIV are significantly different. This suggests that the pathogenicity of the two viruses on chili plants differs. Protein structure predictions using AlphaFold3 also show significant differences. Based on available data, control of PepYLCAV and PepYLCIV can be achieved using different approaches, as these viruses have distinct sequences that may affect their pathogenicity.
Co-Authors Agustin Zarkani Chan, April Djamilah Djamilah, Djamilah Do, Duy-Hung Fauzi, Ariffatchur Hamidi, Ilmi Ifebri, Rihan Mengesha, Nakachew Minuye Mimi Sutrawati Nevilta, Ariotia Prastio, Turko RATTANA, Nitchayamon